Tag Archives: R-nought

Choose words carefully when writing about Ebola

Phot by NIAID via Flickr

Image by NIAID via Flickr

Word choice matters, especially when it comes to covering a deadly disease.

You may have heard the terms “infectious” and “contagious” being used interchangeably in Ebola stories. Even health professionals sometimes use them that way, and that is adequate in many instances. However, minor differences between the two terms may play a role in which one you decide to use in a story.

According to the CDC, contagious means the bacteria or virus can be transmitted from person to person (a communicable disease), and is quantified by R-nought – a mathematical construct that predicts the number of people a contagious individual will infect. Continue reading

Defusing panic over Ebola by understanding R-nought

Earlier today it was announced that Thomas Eric Duncan died in Dallas. Duncan, a Liberian national who contracted Ebola in Liberia, did not show symptoms on his journey to Dallas or immediately after his arrival. Various news outlets are reporting that travelers arriving in the United States from West Africa would have their temperatures taken and be asked to answer questionnaires ascertaining any possible exposure.

Given today’s events, it’s understandable that Internet speculation and media coverage have fanned the flames of public panic regarding Ebola. But reporters should be asking state and local epidemiologists if that panic is really justified.

Math can answer that question.

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